Hi,
I had three group:
1.admin:just as Administartor,can contrl any thing.
2.power:give some rights to manager and control module.
3.member:just use module,and can't contorl module

In event guide 2.54:
manager authodity doen't work on "System\Gurops "
so,i use "event guide\perforence\Group of Event Post "
but it just have one option to chose what group you can register a new event.

If I chose "member" ,then any member can reigster a new event.
If I chose "power",then just "power" can register,"admin" can't register one.

may be I shold new a group as eventRegister for rigister?
or I can just have a group "power" to register,and admin can regiser ,too.

Correct.

In admin permission in XOOPS will be full control all event.
In eguide's allow post group can be allow only posted event article.

You want that class control use. You need create new a group.

thx for your help